Allow comments in /etc/sub{gu}id files
Allow comments in /etc/sub{gu}id files

My (unmodified) files in ubuntu utopic have comments (via the standard '#'
syntax) in them; we shouldn't fail when parsing these files.

Signed-off-by: Tycho Andersen <10c18fcb898ee6b17d6575d444b125d10b3f4d6a@canonical.com>

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